Hospital window



Jan. 1925- 1,524,167

P. M. BURGESS HOSPITAL WINDOW Filed June 14, 1922 Pea-area Jan. 27, 1925.

UNITED sTAi Es anna. PATENT OFFICET PEARL M. BURGESS, OF READING, MASSACHUSETTS, ASSIGNOR T0 PEARL M. BURGESS AND JOSEPH BLACHEB, DOING BUSINESS AS BURGESS AND BLACHER, OF BOSTON,

IiIASSACHUSE'ITS, A FIRM.

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Application filed .Tune 14, 1922. Serial No. 568,283.

To all whom it may concern:

Be it known that I, Pnann M. Bnnonss, a citizen of the United States, residing at Reading, in the county of Middlesex and State of Massachusetts, have invented new and useful Improvements in HospitalWindows, of which the following is a specification.

This invention relates to windows of rooms in which the maintenance of a uniform degree of temperature is important, as in hospitals, such windows including inner and outer glazed sashes separated by air spaces.

The chief object of the invention is to check the transmission of heat from the room through the inner sash into the air space between the sashes, and to prevent the formation of frost on the glass of the sashes, and particularly that of the inner sash.

The invention is embodied in the improve ments hereinafter described and claimed.

Of the accompanying drawings forming a part of this specification,

Figure 1 is a side view of a hospital win dow embodying the invent-ion, looking toward the outer side of the outer sash.

Figure 2 is a section on line 2-2 of Figure 1, and a plan view of parts below said line.

Figure 3 is a fragmentary section on line of Figure 1, looking toward the left.

The same reference characters indicate the same parts in all of the Figures.

12 designates the outer sash, and 13 the inner sash of a hospital window, these being separated by an air space 1 1. The glass elements of the outer sash are designated by 1%, and those of the inner sash by 13 I provide air-heating means located in the lower portion of the air space 14, midway between and spaced from the vertical edges of the air space, said means being preferably embodied in an electrical resistance unit 15, fixed to the sill 16 between the sashes. Said unit, which is shown somewhat con- '\'entionally, preferably has a flat-sided elongated body mounted on ears or brackets 18, fixed to the sill and supporting the body above the sill with its fiat sides facing upward and downward. I do not limit myself, however, to a unit thus characterized. The electrical connections (not shown) may be arranged in any suitable manner.

Outside air is admitted to the lower portion of the air space below the heating means by lower inlet ducts 20, arranged to cause the entering air to impinge upon, and be warmed by, the heating means. The inlet ducts are also located midway between and spaced from the vertical edges of the air space. The warmed air rises in the air space to upper outlet ducts 21, communicating with the upper portion of the air space and located relatively near the vertical edges of said space, out'of vertical. alinement with the inlet ducts, the arrangement being such that an upward current of warm or tempered air is n'iaintained in the air space in contact with both sashes, and checks transmission of heat from the room through the glass of the inner sash, and prevents the formation of frost on the glass of both sashes.

The inlet duct-s 20 are preferably formed in the sill 16, said ducts having intake ends in. the outer edge or face of the sill, and dis charge ends in the upper surface of the sill between the sashes, the ducts being inclined upwardly from their intake to their dis charge ends, to prevent rain or snow from passing through the ducts.

The outlet ducts 21 are preferably formed in the top bar of the outer sash, said ducts having hoods 22, formed to prevent the en trance of rain or snow.

To provide for the admission of the warmed air to the room through the inner sash for ventilation, I preferably construct the inner sash with a movable section or sections, adapted to; open inwardly. In this instance I show two movable sections 13", one at each end of the sash. Each section preferably extends from the bottom to the top of the sash, so that when either section is opened air may pass from the upper portion of the air space into the room. The sections 13* are connected with fixed members of the inner sash by hinges at 23 (Figure 2), arranged to permit the section to swing on vertical axis.

The outer sash, may include movable sections 12, connected by hinges at 2 1 with fixed members of the outer sash. The sections 12 are preferably of about half the height of the outer sash, as shown by Figure 1.

I do not limit myself to electrical heating means, although I consider the same pref erable. Heating means utilizing steam or other fluid may be employed if desired.

As shown by Figure 1, the number of the lower ducts 20 exceeds that of the upper ducts 21, five lower ducts and two upper ducts being shown. The capacity of the lower ducts is, there-fore, greater than that of the upper ducts. The upper ducts, therefore, collectively constitute a vent means,

so retarding'the escape of air from the upper portion of the air space, that the admitted air, warmed by the heater, is dis tributed laterally while flowing upward, and is caused to contact with all portions of the opposed facesiof the sashes, and flow s1owly through the air space, so that its heat is fully utilized to prevent the formation of frost.

The heater and the inlet ducts 20 are preferably located at the center of the lower portion of the airspace, while the up per, or vent ducts '21, are preferably located at the ends of the upper port-ion of the air space, and out of vertical alinement with the inlet ducts, the ducts 20 being arranged to cause all of the admitted air to impinge directly on the heater. This rela posed faces of the sashes, enables a relativethe sashes before escaping at the vent ducts;

In case it is desired to utilize the air admitted to the air space, for ventilating the room, this may be accomplished by opening,

the sash sections 13 sufiicie-ntly to form air passages of much IGZLtQl capacity than the vent ducts 21. i hen this is done, the greater portion,.if not all, of the admitted air will enter the rooms, any possible escape of'air through the vent ducts being so small as to be negligible, so far as ventilationis concerned.

I claim:

A hospital window comprising, in oombination, flazcd inner and outer sashes. separated by an air space, inlet ducts communicating with the bottom portion of said space midway between, and spaced from, the vertical edges thereof, outlet ducts communicat ing with the upper portion of the air space. and a. heater located in the lower portion of the air space midway between, and spaced from,the vertical edges thereof and in the path. of air admitted by the inletducts, the outlet ducts being relatively near said vertical edges, so that they are out of vertical alinement with the inlet ducts.

In testimony whereof I have affixed my signature.

PEARL M. BURGESS. 

